Texas Instruments OMAP36 Series, Техническое справочное руководство

Страница: 1967 / 3738

Public Version
www.ti.com
SGX Overview
• Industry-standard API support – Direct3D Mobile, OpenGL ES 1.1 and 2.0, OpenVG v1.0.1
• Fine-grained task switching, load balancing, and power management
• Advanced geometry direct memory access (DMA) driven operation for minimum CPU interaction
• Programmable high-quality image anti-aliasing
• POWERVR SGX core MMU for address translation from the core virtual address to the external
physical address (up to 4GB address range)
• Fully virtualized memory addressing for OS operation in a unified memory architecture
• Advanced and standard 2D operations [e.g., vector graphics, BLTs (block level transfers), ROPs
(raster operations)]
• 32K stride support
8.1.2 SGX 3D Features
• Deferred pixel shading
• On-chip tile floating point depth buffer
• 8-bit stencil with on-chip tile stencil buffer
• 8 parallel depth/stencil tests per clock
• Scissor test
• Texture support:
– Cube map
– Projected textures
– 2D textures
– Nonsquare textures
• Texture formats:
– RGBA 8888, 565, 1555
– Monochromatic 8, 16, 16f, 32f, 32int
– Dual channel, 8:8, 16:16, 16f:16f
– Compressed textures PVR-TC1, PVR-TC2, ETC1
– Programmable support for all YUV formats
• Resolution support:
– Frame buffer maximum size = 2048 x 2048
– Texture maximum size = 2048 x 2048
• Texture filtering:
– Bilinear, trilinear, anisotropic
– Independent minimum and maximum control
• Antialiasing:
– 4x multisampling
– Up to 16x full scene anti-aliasing
– Programmable sample positions
• Indexed primitive list support
– Bus mastered
• Programmable vertex DMA
• Render to texture:
– Including twiddled formats
– Auto MipMap generation
• Multiple on-chip render targets (MRT).
Note: Performance is limited when the on-chip memory is not available.
8.1.3 Universal Scalable Shader Engine (USSE) – Key Features
The USSE is the engine core of the POWERVR SGX architecture and supports a broad range of
instructions.
1967 SWPU177N – December 2009 – Revised November 2010 2D/3D Graphics Accelerator
Copyright © 2009–2010, Texas Instruments Incorporated